The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 2017
Filed:
Dec. 08, 2011
Daisuke Yamazaki, Tokyo, JP;
Tetsuo Yano, Tokyo, JP;
Souichirou Torai, Tokyo, JP;
Nobuhiro Tomosada, Tokyo, JP;
Atsufumi Kimura, Tokyo, JP;
Tomomi Akutsu, Tokyo, JP;
Makoto Kawano, Tokyo, JP;
Daisuke Yamazaki, Tokyo, JP;
Tetsuo Yano, Tokyo, JP;
Souichirou Torai, Tokyo, JP;
Nobuhiro Tomosada, Tokyo, JP;
Atsufumi Kimura, Tokyo, JP;
Tomomi Akutsu, Tokyo, JP;
Makoto Kawano, Tokyo, JP;
YOKOGAWA ELECTRIC CORPORATION, Tokyo, JP;
Abstract
In one embodiment, there is provided a fuel cell evaluator for evaluating a characteristic of a fuel cell based on a frequency characteristic of impedance of the fuel cell. The evaluator includes: an impedance acquisition unit configured to acquire impedances of the fuel cell for a certain current value in a Tafel region by changing a measurement frequency; an extraction unit configured to extract a reaction resistance from the acquired impedances; a calculator configured to calculate the product of the reaction resistance and the certain current value; and an indicator configured to indicate the product calculated by the calculator as the frequency characteristic of the impedance of the fuel cell.